I recently came up with a pattern for a hat using the butterfly stitch, which continues almost all the way through the decreases at the top of the hat. I don't really maintain a blog, but this seems like a good place to publish the pattern. So, without further ado, here it is (this pattern is also available as a pdf download on Ravelry).
Size: Adult (approx. 20 inch circumference)
Cascade 220 Superwash, approx. half a ball.
#7/4.5mm circular needle
#5/3.75mm circular needle
#7/4.5mm double-pointed needles
20 sts/26 rows = 4 inches in stockinette using larger needle.
yif = yarn in front
yib = yarn in back
k2tog = knit 2 stitches together
ssk = slip the next 2 stitches knit-wise, then knit them together
s = slip (when slipping stitches, make sure to spread them out, so that your floats are even and don't bunch up)
make butterfly = With your right needle pick up the 5 floats by inserting the needle under the floats from the bottom up, then insert the right needle into the next stitch on the left needle. Knit the stitch and the 5 floats together.
With the smaller circular needles, CO 100 stitches. Place stitch marker and join to knit in the round, being careful not to twist your stitches.
Knit in k2, p2 rib for 1 1/2"
Switch to the larger circular needles.
Round 1, 3, 5, 7, 9: [k5, yif, s5, yib] repeat to end.
Round 2, 4, 6, 8: Knit.
Round 10: [k7, make butterfly, k2] repeat to end.
Round 11, 13, 15, 17, 19: [yif, s5, yib, k5] repeat to end.
Round 12, 14, 16, 18: Knit.
Round 20: [k2, make butterfly, k7] repeat to end.
Repeat rows 1-20 one more time, or until ready to start decreasing.
Decrease: (at some point, when the knitting gets too tight for the circulars, switch to DPNs)
Round 1-3: Repeat rounds 1-3 of the main body section.
Round 4: [k5, k2tog, k3] repeat to end.
Round 5, 7: [k5, yif, s4, yib] repeat to end.
Round 6: Knit.
Round 8: [k7, ssk] repeat to end.
Round 9: [k5, yif, s3, yib] repeat to end.
Round 10: [k6, make butterfly, k1] repeat to end.
Round 11, 13: [yif, s5, yib, k3] repeat to end.
Round 12: Knit.
Round 14: [k2tog, k6] repeat to end.
Round 15, 17: [yif, s4, yib, k3] repeat to end.
Round 16: Knit.
Round 18: [k2, ssk, k3] repeat to end.
Round 19: [yif, s3, yib, k3] repeat to end.
Round 20: [k1, make butterfly, k4] repeat to end.
Round 21: [k4, k2tog] repeat to end.
Round 22: [k3, k2tog] repeat to end.
Round 23: [k2, k2tog] repeat to end.
Round 24: [k1, k2tog] repeat to end.
Round 25: [k2tog] repeat to end.
Cut off the thread, leaving a 6" tail. Using a tapestry needle, slip the remaining stitches onto the yarn tail, bring the tail to the wrong side through the center and pull tight. Weave in the ends and you're done!